UP:MA19.2.12
Vocabulary
- Compose
- Decompose
Knowledge
Students know:
- how to count to 1,000.
- how to identify hundreds, tens, and ones.
- how to compose numbers.
- how to decompose two digit numbers.
- how to record strategies for solving addition and subtraction problems.
Skills
Students are able to:
- add and subtract within 1000.
- model addition problems using visual models.
- record strategies for solving addition problems.
- communicate the relationship between models and symbolic (numeric) representations.
Understanding
Students understand that:
- relationships between models of addition/subtraction problems and written strategies of those models can be used to justify solutions.
